| A | B |
|---|
| clear-cutting | removing of all vegetation from a piece of land |
| density | the measure of how much matter there is in a certain amount of space |
| deposition | by which materials eroded by wind, water, or ice are dropped in a new place |
| earthquake | a sudden movement of the Earth's crust usually occurring along cracks in the crust known as faults |
| elevation | the height of a point on the Earth's surface above sea level |
| erosion | the gradual wearing away of the surfaceof the land by water, wind, ice or gravity |
| fog | very fine droplets of water that are in the air close to the surface of the earth |
| meander | a large bend in a stream channel that develops when soil is eroded from one bank and deposited on the other |
| sediment | Earth's material such as silt, sand, or rock that has been moved from one place to another by water, wind, or a glacier |
| soil | the loose top layer of the earth's surface |
| topographic map | a map that includes natural features of the Earth's surface such as mountains and rivers |
| tributaries | a stream that flows into a river or larger stream |
| tsunami | a very large, destructive ocean wave that is caused by an underwater earthquake or volcanic eruption |
| water erosion | a gradual wearing away of the surface of land by water |
| weathering | process by which water, wind, and ice wear down rocks and other exposed surface ground materials |
